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https://www.readbyqxmd.com/read/27914012/biomechanical-investigation-of-titanium-elastic-nail-prebending-for-treating-diaphyseal-long-bone-fractures
#1
Yen-Nien Chen, Pei-Yuan Lee, Chih-Wei Chang, Yi-Hung Ho, Yao-Te Peng, Chih-Han Chang, Chun-Ting Li
This study numerically investigated the deformation of titanium elastic nails prebent at various degrees during implantation into the intramedullary canal of fractured bones and the mechanism by which this prebending influenced the stability of the fractured bone. Three degrees of prebending the implanted portions of the nails were used: equal to, two times, and three times the diameter of the intramedullary canal. Furthermore, a simulated diaphyseal fracture with a 5-mm gap was created in the middle shaft portion of the bone fixed with two elastic nails in a double C-type configuration...
December 2, 2016: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/27913864/losing-a-battle-but-winning-the-war-moving-past-preference-performance-to-understand-native-herbivore-novel-host-plant-interactions
#2
Leone M Brown, Greg A Breed, Paul M Severns, Elizabeth E Crone
Introduced plants can positively affect population viability by augmenting the diet of native herbivores, but can negatively affect populations if they are subpar or toxic resources. In organisms with complex life histories, such as insects specializing on host plants, the impacts of a novel host may differ across life stages, with divergent effects on population persistence. Most research on effects of novel hosts has focused on adult oviposition preference and larval performance, but adult preference may not optimize offspring performance, nor be indicative of host quality from a demographic perspective...
December 2, 2016: Oecologia
https://www.readbyqxmd.com/read/27913691/exploring-the-chronic-illness-experience-of-rural-dwelling-latinos-of-mexican-origin
#3
Anissa Guzman
INTRODUCTION: Chronic illness is a complex and ever-growing phenomenon that is affecting millions of Americans every day, and it is disproportionately experienced by Latinos of Mexican origin. METHOD: In this quantitative study, the specific aims were to evaluate perceptions of chronic illness(es), locus of control (health and God), health status, and cultural orientation of rural-dwelling Latinos of Mexican origin in Colorado who have one or more chronic illnesses and to explore the relationships existing between these concepts...
December 2016: Hispanic Health Care International: the Official Journal of the National Association of Hispanic Nurses
https://www.readbyqxmd.com/read/27913679/modelling-gtpase-dynamics-to-understand-rhoa-driven-cancer-cell-invasion
#4
REVIEW
Joseph H R Hetmanski, Jean-Marc Schwartz, Patrick T Caswell
Metastasis, initially driven by cells migrating and invading through the local environment, leads to most cancer-associated deaths. Cells can use a variety of modes to move in vitro, all of which depend on Rho GTPases at some level. While traditionally it was thought that Rac1 activity drives protrusive lamellipodia at the leading edge of a polarised cell while RhoA drives rear retraction, more recent work in 3D microenvironments has revealed a much more complicated picture of GTPase dynamics. In particular, RhoA activity can dominate the leading edge polymerisation of actin to form filopodial actin-spike protrusions that drive more invasive cell migration...
December 15, 2016: Biochemical Society Transactions
https://www.readbyqxmd.com/read/27913563/-you-can-t-be-a-person-and-a-doctor-the-work-life-balance-of-doctors-in-training-a-qualitative-study
#5
Antonia Rich, Rowena Viney, Sarah Needleman, Ann Griffin, Katherine Woolf
OBJECTIVES: Investigate the work-life balance of doctors in training in the UK from the perspectives of trainers and trainees. DESIGN: Qualitative semistructured focus groups and interviews with trainees and trainers. SETTING: Postgraduate medical training in London, Yorkshire and Humber, Kent, Surrey and Sussex, and Wales during the junior doctor contract dispute at the end of 2015. Part of a larger General Medical Council study about the fairness of postgraduate medical training...
December 2, 2016: BMJ Open
https://www.readbyqxmd.com/read/27913471/sequencing-of-chronic-lymphocytic-leukemia-therapies
#6
Jacqueline C Barrientos
It is an unprecedented time for the treatment of patients with chronic lymphocytic leukemia (CLL) with the recent approval of several targeted agents for use in frontline, relapsed, refractory, and high-risk disease. Traditionally, frontline management of CLL has been a combination of chemotherapy (fludarabine, cyclophosphamide, bendamustine, or chlorambucil) with an anti-CD20 monoclonal antibody (rituximab, ofatumumab, obinutuzumab). The current landscape is rapidly evolving with the advent of therapies that demonstrate selective inhibition of important pathways necessary for CLL proliferation and survival...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913430/cortical-circuit-for-binding-object-identity-and-location-during-multiple-object-tracking
#7
Lauri Nummenmaa, Lauri Oksama, Erico Glerean, Jukka Hyönä
Sustained multifocal attention for moving targets requires binding object identities with their locations. The brain mechanisms of identity-location binding during attentive tracking have remained unresolved. In 2 functional magnetic resonance imaging experiments, we measured participants' hemodynamic activity during attentive tracking of multiple objects with equivalent (multiple-object tracking) versus distinct (multiple identity tracking, MIT) identities. Task load was manipulated parametrically. Both tasks activated large frontoparietal circuits...
December 1, 2016: Cerebral Cortex
https://www.readbyqxmd.com/read/27913416/mutagenesis-of-nosm-leader-peptide-reveals-important-elements-in-nosiheptide-biosynthesis
#8
Liang Jin, Xuri Wu, Yanjiu Xue, Yue Jin, Shuzhen Wang, Yijun Chen
: Nosiheptide, a typical member of ribosomally synthesized and post-translationally modified peptides (RiPPs), exhibits potent activity against multi-drug resistant Gram-positive bacterial pathogens. The precursor peptide of nosiheptide (NosM) is comprised of a leader peptide with 37 amino acids and a core peptide containing 13 amino acids. To pinpoint essential elements in the leader peptide for nosithpetide biosynthesis, a collection of mutants with unique sequence features, including N- and C-terminal motifs, peptide length as well as specific sites in the leader peptide, was generated by mutagenesis in vivo The effects of various mutants on nosiheptide biosynthesis were evaluated...
December 2, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27913338/intracardiac-vortex-dynamics-by-high-frame-rate-doppler-vortography-i-in-vivo-i-comparison-with-vector-flow-mapping-and-4-d-flow-mri
#9
Julia Faurie, Mathilde Baudet, Kondo Claude Assi, Dominique Auger, Guillaume Gilbert, Francois Tournoux, Damien Garcia
Recent studies have suggested that intracardiac vortex flow imaging could be of clinical interest to early diagnose the diastolic heart function. Doppler vortography has been intro-duced as a simple color Doppler method to detect and quantify intraventricular vortices. This method is able to locate a vortex core based on the recognition of an antisymmetric pattern in the Doppler velocity field. Because the heart is a fast-moving organ, high frame rates are needed to decipher the whole blood vortex dynamics during diastole...
November 29, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27913162/intranasal-delivery-of-antipsychotic-drugs
#10
REVIEW
Yogesh K Katare, Justin E Piazza, Jayant Bhandari, Ritesh P Daya, Kosalan Akilan, Madeline J Simpson, Todd Hoare, Ram K Mishra
Antipsychotic drugs are used to treat psychotic disorders that afflict millions globally and cause tremendous emotional, economic and healthcare burdens. However, the potential of intranasal delivery to improve brain-specific targeting remains unrealized. In this article, we review the mechanisms and methods used for brain targeting via the intranasal (IN) route as well as the potential advantages of improving this type of delivery. We extensively review experimental studies relevant to intranasal delivery of therapeutic agents for the treatment of psychosis and mental illnesses...
November 29, 2016: Schizophrenia Research
https://www.readbyqxmd.com/read/27913075/the-photosensitivity-model-is-not-a-model-for-partial-focal-seizures-rebuttal
#11
Roger J Porter
New, more effective and less toxic medications are desperately needed for patients with partial (focal) epilepsy. Many hurdles prevent the appropriate study of promising compounds. One of these hurdles is the gap between Phase I and Phase II-the expensive proof of concept to suggest that human trials in partial seizure patients will be successful. A short-cut, the photoparoxysmal response (PPR) model has recently been used to increase confidence in moving a compound into Phase II and III. This shortcut has substantial limitations...
November 22, 2016: Epilepsy Research
https://www.readbyqxmd.com/read/27912882/tenuifolin-a-saponin-derived-from-radix-polygalae-exhibits-sleep-enhancing-effects-in-mice
#12
Qing Cao, Yong Jiang, Su-Ying Cui, Peng-Fei Tu, Yue-Mei Chen, Xiao-Li Ma, Xiang-Yu Cui, Yuan-Li Huang, Hui Ding, Jin-Zhi Song, Bin Yu, Zhao-Fu Sheng, Zi-Jun Wang, Ya-Ping Xu, Guang Yang, Hui Ye, Xiao Hu, Yong-He Zhang
BACKGROUND: Radix Polygalae, the dried root of Polygala tenuifolia, has been extensively used as a traditional Chinese medicine for promoting intelligence and tranquilization. Polygalasaponins extracted from the root of P. tenuifolia possess evident anxiolytic and sedative-hypnotic activities. Previous studies have reported that tenuifolin was a major constituent of polygalasaponins. PURPOSE: The currently study aims to investigate the hypnotic effect and possible mechanism of tenuifolin in freely moving mice...
December 15, 2016: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/27912860/late-style-as-exile-de-colonising-the-life-course
#13
Heike Hartung
In the collection of essays On Late Style, Edward Said reflects on the new idiom achieved by great artists in their work near the end of their lives as "late style." Drawing on Adorno's essay on Beethoven's late style, Said also focuses on the aesthetic aspects of lateness. Defining the late works of artists as "a form of exile," however, Said moves beyond Adorno's aesthetic conception of late style. Highlighting the artist's abandonment of communication with the established social order, who achieves a contradictory, alienated relationship with it instead, Said compares artistic lateness with the experience of the subject in exile...
December 2016: Journal of Aging Studies
https://www.readbyqxmd.com/read/27912852/old-age-and-vulnerability-between-first-second-and-third-person-perspectives-ethnographic-explorations-of-aging-in-contemporary-denmark
#14
Lone Grøn
This paper is based on an ethnographic fieldwork aimed at exploring ethnographically how vulnerability in old age is perceived and experienced in contemporary Denmark. The fieldwork showed remarkable differences between two phases of the fieldwork: the first addressing vulnerability from the "outside" through group interviews with professionals, leaders and older people who were not (yet) vulnerable; and the second from the "inside" through more in depth fieldwork with older people who in diverse ways could be seen as vulnerable...
December 2016: Journal of Aging Studies
https://www.readbyqxmd.com/read/27912780/the-influence-of-cost-per-daly-information-in-health-prioritisation-and-desirable-features-for-a-registry-a-survey-of-health-policy-experts-in-vietnam-india-and-bangladesh
#15
Yot Teerawattananon, Sripen Tantivess, Inthira Yamabhai, Nattha Tritasavit, Damian G Walker, Joshua T Cohen, Peter J Neumann
BACKGROUND: Economic evaluation has been implemented to inform policy in many areas, including coverage decisions, technology pricing, and the development of clinical practice guidelines. However, there are barriers to evidence-based policy in low- and middle-income countries (LMICs) that include limited stakeholder awareness, resources and data availability, as well as the lack of capacity to conduct country-specific economic evaluations. This study aims to survey health policy experts' opinions on barriers to use of cost-effectiveness data in these settings and to obtain their advice on how to make a new cost-per-DALY database being developed by Tufts Medical Center more relevant to LMICs...
December 3, 2016: Health Research Policy and Systems
https://www.readbyqxmd.com/read/27912730/homesick-residential-and-care-patterns-in-patients-with-severe-mental-illness
#16
Liselotte D de Mooij, Martijn Kikkert, Nick M Lommerse, Jan Theunissen, Mariken B de Koning, Lieuwe de Haan, Aartjan T F Beekman, Pim W R A Duurkoop, Jack J M Dekker
BACKGROUND: Changes in the residential and care settings of patients with severe mental illness (SMI) are a concern because of the large variety of possible negative consequences. This study describes patterns of changes in the residential and care settings of SMI patients and explores associations between these changes, sociodemographics, and clinical characteristics. METHODS: From January 2006 to January 2012, all data relating to changes in residential and/or care setting by SMI patients (N = 262) were collected from electronic case files...
December 3, 2016: BMC Psychiatry
https://www.readbyqxmd.com/read/27912066/cell-type-specific-optical-recording-of-membrane-voltage-dynamics-in-freely-moving-mice
#17
Jesse D Marshall, Jin Zhong Li, Yanping Zhang, Yiyang Gong, François St-Pierre, Michael Z Lin, Mark J Schnitzer
Electrophysiological field potential dynamics are of fundamental interest in basic and clinical neuroscience, but how specific cell types shape these dynamics in the live brain is poorly understood. To empower mechanistic studies, we created an optical technique, TEMPO, that records the aggregate trans-membrane voltage dynamics of genetically specified neurons in freely behaving mice. TEMPO has >10-fold greater sensitivity than prior fiber-optic techniques and attains the noise minimum set by quantum mechanical photon shot noise...
December 1, 2016: Cell
https://www.readbyqxmd.com/read/27912000/green-wave-tracking-by-large-herbivores-an-experimental-approach
#18
Inger Maren Rivrud, Marco Heurich, Philipp Krupczynski, Jörg Müller, Atle Mysterud
The forage maturation hypothesis (FMH) states that herbivores should follow the onset of growth in spring to obtain access to forage of higher quality and quantity, the so-called "green wave surfing." Several studies have found correlative evidence in support of this by associating animal movement with plant phenology. However, experimental manipulation of vast natural systems determining causes of large herbivore movement is usually beyond reach. The unique management system involving winter enclosures for wild red deer (Cervus elaphus) in Germany facilitated an opportunity for an experimental approach...
December 2016: Ecology
https://www.readbyqxmd.com/read/27911972/integrating-behavioral-health-into-pediatric-primary-care-implications-for-provider-time-and-cost
#19
Natasha Gouge, Jodi Polaha, Rachel Rogers, Amy Harden
OBJECTIVES: Integrating a behavioral health consultant (BHC) into primary care is associated with improved patient outcomes, fewer medical visits, and increased provider satisfaction; however, few studies have evaluated the feasibility of this model from an operations perspective. Specifically, time and cost have been identified as barriers to implementation. Our study aimed to examine time spent, patient volume, and revenue generated during days when the on-site BHC was available compared with days when the consultant was not...
December 2016: Southern Medical Journal
https://www.readbyqxmd.com/read/27911842/map-reading-navigating-from-maps-and-the-medial-temporal-lobe
#20
Zhisen J Urgolites, Soyun Kim, Ramona O Hopkins, Larry R Squire
We administered map-reading tasks in which participants navigated an array of marks on the floor by following paths on hand-held maps that made up to nine turns. The burden on memory was minimal because the map was always available. Nevertheless, because the map was held in a fixed position in relation to the body, spatial computations were continually needed to transform map coordinates into geographical coordinates as participants followed the maps. Patients with lesions limited to the hippocampus (n = 5) performed similar to controls at all path lengths (experiment 1)...
November 28, 2016: Proceedings of the National Academy of Sciences of the United States of America
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